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/*
* Copyright (C) 2010 Eric S. Raymond.
*
* This software is distributed under a BSD-style license. See the
* file "COPYING" in the top-level directory of the distribution for details.
*
* This simple program shows the basic functionality of the C++ wrapper class
*/
#include "../include/gpsd_config.h" // must be before all includes
#include <getopt.h>
#include <iostream>
#include "../include/libgpsmm.h"
#include "../include/timespec.h"
#include "../libgps/timespec_str.c"
#include "../libgps/gpsdclient.c"
/* YES ---> ^^^^
Using .c rather than the .h to embed gpsd_source_spec() source here
so that it is compiled in C++ rather than C of the gps library
(otherwise fails to link as the signatures are unavailable/different)
*/
using namespace std;
void printfinite(double val)
{
if (0 == isfinite(val)) {
(void)fputs(" N/A ", stdout);
} else {
(void)fprintf(stdout, "%6.2f ", val);
}
}
/*
* We should get libgps_dump_state() from the client library, but
* scons has a bug; we can't get it to add -lgps to the link line,
* apparently because it doesn't honor parse_flags on a Program()
* build of a C++ file.
*/
static void libgps_dump_state(struct gps_data_t *collect)
{
char ts_str[TIMESPEC_LEN];
// no need to dump the entire state, this is a sanity check
#ifndef USE_QT
(void)fprintf(stdout, "flags: (0x%04x) %s\n",
(unsigned int)collect->set, gps_maskdump(collect->set));
#endif
if (collect->set & ONLINE_SET) {
(void)fprintf(stdout, "ONLINE: %s\n",
timespec_str(&collect->online, ts_str, sizeof(ts_str)));
}
if (collect->set & TIME_SET) {
(void)fprintf(stdout, "TIME: %s\n",
timespec_str(&collect->fix.time, ts_str, sizeof(ts_str)));
}
if (collect->set & LATLON_SET) {
(void)fprintf(stdout, "LATLON: lat/lon: %lf %lf\n",
collect->fix.latitude, collect->fix.longitude);
}
if (collect->set & ALTITUDE_SET) {
(void)fprintf(stdout, "ALTITUDE: altHAE: %lf U: climb: %lf\n",
collect->fix.altHAE, collect->fix.climb);
}
if (collect->set & SPEED_SET) {
(void)fprintf(stdout, "SPEED: %lf\n", collect->fix.speed);
}
if (collect->set & TRACK_SET) {
(void)fprintf(stdout, "TRACK: track: %lf\n", collect->fix.track);
}
if (collect->set & CLIMB_SET) {
(void)fprintf(stdout, "CLIMB: climb: %lf\n", collect->fix.climb);
}
if (collect->set & STATUS_SET) {
(void)fprintf(stdout, "STATUS: status: %d\n", collect->fix.status);
}
if (collect->set & MODE_SET) {
(void)fprintf(stdout, "MODE: mode: %d\n", collect->fix.mode);
}
if (collect->set & SATELLITE_SET) {
(void)fprintf(stdout,
"DOP: satellites %d, pdop=%lf, hdop=%lf, vdop=%lf\n",
collect->satellites_used, collect->dop.pdop,
collect->dop.hdop, collect->dop.vdop);
}
if (collect->set & VERSION_SET) {
(void)fprintf(stdout, "VERSION: release=%s rev=%s proto=%d.%d\n",
collect->version.release,
collect->version.rev,
collect->version.proto_major,
collect->version.proto_minor);
}
if (collect->set & POLICY_SET) {
(void)fprintf(stdout,
"POLICY: watcher=%s nmea=%s raw=%d scaled=%s "
"timing=%s, devpath=%s\n",
collect->policy.watcher ? "true" : "false",
collect->policy.nmea ? "true" : "false",
collect->policy.raw,
collect->policy.scaled ? "true" : "false",
collect->policy.timing ? "true" : "false",
collect->policy.devpath);
}
if (collect->set & SATELLITE_SET) {
int i;
(void)fprintf(stdout, "SKY: satellites in view: %d\n",
collect->satellites_visible);
for (i = 0; i < collect->satellites_visible; i++) {
(void)fprintf(stdout, " %3d", collect->skyview[i].PRN);
printfinite(collect->skyview[i].elevation);
printfinite(collect->skyview[i].azimuth);
printfinite(collect->skyview[i].ss);
(void)fprintf(stdout, collect->skyview[i].used ? " Y\n" : " N\n");
}
}
if (collect->set & DEVICE_SET) {
(void)fprintf(stdout, "DEVICE: Device is '%s', driver is '%s'\n",
collect->dev.path, collect->dev.driver);
}
#ifdef OLDSTYLE_ENABLE
if (collect->set & DEVICEID_SET) {
(void)fprintf(stdout, "GPSD ID is %s\n", collect->dev.subtype);
}
#endif // OLDSTYLE_ENABLE
if (collect->set & DEVICELIST_SET) {
int i;
(void)fprintf(stdout, "DEVICELIST:%d devices:\n",
collect->devices.ndevices);
for (i = 0; i < collect->devices.ndevices; i++) {
(void)fprintf(stdout, "%d: path='%s' driver='%s'\n",
collect->devices.ndevices,
collect->devices.list[i].path,
collect->devices.list[i].driver);
}
}
}
int main(int argc, char *argv[])
{
uint looper = UINT_MAX;
// A typical C++ program may look to use a more native option parsing method
// such as boost::program_options
// But for this test program we don't want extra dependencies
// Hence use C style getopt for (build) simplicity
int option;
while ((option = getopt(argc, argv, "l:h?")) != -1) {
switch (option) {
case 'l':
looper = atoi(optarg);
break;
case '?':
case 'h':
default:
cout << "usage: " << argv[0] << " [-l n]\n";
exit(EXIT_FAILURE);
break;
}
}
struct fixsource_t source;
// Grok the server, port, and device.
if (optind < argc) {
gpsd_source_spec(argv[optind], &source);
} else {
gpsd_source_spec(NULL, &source);
}
// gpsmm gps_rec("localhost", DEFAULT_GPSD_PORT);
gpsmm gps_rec(source.server, source.port);
if (!((std::string)source.server == (std::string)GPSD_SHARED_MEMORY ||
(std::string)source.server == (std::string)GPSD_DBUS_EXPORT) ) {
if (NULL == gps_rec.stream(WATCH_ENABLE|WATCH_JSON)) {
cerr << "No GPSD running.\n";
return 1;
}
}
/* Loop for the specified number of times
* If not specified then by default it loops until ll simply goes out
* of bounds. So with the 5 second wait & a 4 byte uint - this equates
* to ~680 years - long enough for a test program :)
*/
for (uint ll = 0; ll < looper; ll++) {
struct gps_data_t* newdata;
if (!gps_rec.waiting(5000000)) {
continue;
}
// Flawfinder: ignore
if (NULL == (newdata = gps_rec.read())) {
cerr << "Read error.\n";
return 1;
} else {
libgps_dump_state(newdata);
}
}
cout << "Exiting\n";
return 0;
}
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